In today’s issue:
Anthropic ships Claude Haiku 5.5
Google launches the Gemini agent
Mistral previews Large 4
OpenAI opens the Decisions API
Meta and Sierra propose Personal Agent Protocol
Devin gets Memory and Dreaming
Reflection unveils Beam open model
GPT-6 brings Intelligent UI to ChatGPT
Hugging Face trains models across harnesses
OpenAI releases 719 math manuscripts
And all the top AI dev news, papers, and tools.
Top Stories
Claude Haiku 5.5
Anthropic released Claude Haiku 5.5, which it calls its cheapest, fastest, and most capable small model to date. It targets high-volume work such as summaries, compaction, classification, and subagent tasks under Opus 5.5 and Sonnet 5.5, and costs around 75% less to run than Haiku 4.5 on average.
Agentic performance: 72.4% on the OSWorld 2.1 offline subset against 15.7% for Haiku 4.5, 39.2% on Terminal-Bench 4.0 against 0.0%, and a GDPval-AA v2.1 Elo of 1620 against 735.
Pricing: $0.10 input, $0.50 output, and $0.01 cache reads per million tokens for prompts up to 100K tokens, which covered about 90% of Haiku 4.5 requests. Longer prompts cost $0.50 input and $2.50 output.
Effort control: It is the first Haiku model with an adjustable effort setting, so developers can trade cost for intelligence per task.
Wider price changes: Sonnet 5.5 cache reads drop from $0.20 to $0.10 per million tokens, cutting its cost on most agentic work by around 20%. Max and Team subscribers get monthly API credits of $100 to $500, and the Python and TypeScript SDKs add computer use and browser use in beta.
Availability: Live as
claude-haiku-5-5on all platforms, including AWS, Google Cloud, and Azure.